From: trevor_hansen <trevor_hansen@e59a4935-1847-0410-ae03-e826735625c1>
Date: Wed, 9 Mar 2011 04:14:36 +0000 (+0000)
Subject: Fix. In the prior checkin I didn't keep track of which nodes had been visited.
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=dd1112fb5d17b0155e0459e783956d79c21dc767;p=francis%2Fstp.git

Fix. In the prior checkin I didn't keep track of which nodes had been visited.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1195 e59a4935-1847-0410-ae03-e826735625c1
---

diff --git a/src/simplifier/MutableASTNode.h b/src/simplifier/MutableASTNode.h
index 1ed2c43..77aecff 100644
--- a/src/simplifier/MutableASTNode.h
+++ b/src/simplifier/MutableASTNode.h
@@ -258,7 +258,7 @@ private:
     void
     getAllVariablesRecursively(vector<MutableASTNode*> & result, set<MutableASTNode*>& visited)
     {
-      if (visited.find(this) != visited.end())
+      if (!visited.insert(this).second)
         return;
       if (isSymbol())
         result.push_back(this);